1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
231
232
233
234
235
236
237
238
239
240
241
242
243
244
245
246
247
248
249
250
251
252
253
254
255
256
257
258
259
260
261
262
263
264
265
266
|
/*
* DisMan Event MIB:
* Implementation of the mteEventNotificationTable MIB interface
* See 'mteEvent.c' for active behaviour of this table.
*
* (based on mib2c.table_data.conf output)
*/
#include <net-snmp/net-snmp-config.h>
#include <net-snmp/net-snmp-features.h>
#include <net-snmp/net-snmp-includes.h>
#include <net-snmp/agent/net-snmp-agent-includes.h>
#include "disman/event/mteEvent.h"
#include "disman/event/mteEventNotificationTable.h"
netsnmp_feature_require(table_tdata)
#ifndef NETSNMP_NO_WRITE_SUPPORT
netsnmp_feature_require(check_vb_type_and_max_size)
netsnmp_feature_require(check_vb_oid)
#endif /* NETSNMP_NO_WRITE_SUPPORT */
static netsnmp_table_registration_info *table_info;
/* Initializes the mteEventNotificationTable module */
void
init_mteEventNotificationTable(void)
{
static oid mteEventNotificationTable_oid[] = { 1, 3, 6, 1, 2, 1, 88, 1, 4, 3 };
size_t mteEventNotificationTable_oid_len = OID_LENGTH(mteEventNotificationTable_oid);
netsnmp_handler_registration *reg;
/*
* Ensure the (combined) table container is available...
*/
init_event_table_data();
/*
* ... then set up the MIB interface to the mteEventNotificationTable slice
*/
#ifndef NETSNMP_NO_WRITE_SUPPORT
reg = netsnmp_create_handler_registration("mteEventNotificationTable",
mteEventNotificationTable_handler,
mteEventNotificationTable_oid,
mteEventNotificationTable_oid_len,
HANDLER_CAN_RWRITE);
#else /* !NETSNMP_NO_WRITE_SUPPORT */
reg = netsnmp_create_handler_registration("mteEventNotificationTable",
mteEventNotificationTable_handler,
mteEventNotificationTable_oid,
mteEventNotificationTable_oid_len,
HANDLER_CAN_RONLY);
#endif /* !NETSNMP_NO_WRITE_SUPPORT */
table_info = SNMP_MALLOC_TYPEDEF(netsnmp_table_registration_info);
netsnmp_table_helper_add_indexes(table_info,
ASN_OCTET_STR, /* index: mteOwner */
/* index: mteEventName */
ASN_PRIV_IMPLIED_OCTET_STR,
0);
table_info->min_column = COLUMN_MTEEVENTNOTIFICATION;
table_info->max_column = COLUMN_MTEEVENTNOTIFICATIONOBJECTS;
/* Register this using the (common) event_table_data container */
netsnmp_tdata_register(reg, event_table_data, table_info);
DEBUGMSGTL(("disman:event:init", "Event Notify Table container (%p)\n",
event_table_data));
}
void
shutdown_mteEventNotificationTable(void)
{
if (table_info) {
netsnmp_table_registration_info_free(table_info);
table_info = NULL;
}
}
/** handles requests for the mteEventNotificationTable table */
int
mteEventNotificationTable_handler(netsnmp_mib_handler *handler,
netsnmp_handler_registration *reginfo,
netsnmp_agent_request_info *reqinfo,
netsnmp_request_info *requests)
{
netsnmp_request_info *request;
netsnmp_table_request_info *tinfo;
struct mteEvent *entry;
int ret;
DEBUGMSGTL(("disman:event:mib", "Notification Table handler (%d)\n", reqinfo->mode));
switch (reqinfo->mode) {
/*
* Read-support (also covers GetNext requests)
*/
case MODE_GET:
for (request = requests; request; request = request->next) {
if (request->processed)
continue;
entry = (struct mteEvent *) netsnmp_tdata_extract_entry(request);
tinfo = netsnmp_extract_table_info(request);
/*
* The mteEventNotificationTable should only contains entries
* for rows where the mteEventActions 'notification(0)' bit
* is set. So skip entries where this isn't the case.
*/
if (!entry || !(entry->mteEventActions & MTE_EVENT_NOTIFICATION))
continue;
switch (tinfo->colnum) {
case COLUMN_MTEEVENTNOTIFICATION:
snmp_set_var_typed_value(request->requestvb, ASN_OBJECT_ID,
(u_char *) entry->mteNotification,
entry->mteNotification_len*sizeof(oid));
break;
case COLUMN_MTEEVENTNOTIFICATIONOBJECTSOWNER:
snmp_set_var_typed_value(request->requestvb, ASN_OCTET_STR,
(u_char *) entry->mteNotifyOwner,
strlen(entry->mteNotifyOwner));
break;
case COLUMN_MTEEVENTNOTIFICATIONOBJECTS:
snmp_set_var_typed_value(request->requestvb, ASN_OCTET_STR,
(u_char *) entry->mteNotifyObjects,
strlen(entry->mteNotifyObjects));
break;
}
}
break;
#ifndef NETSNMP_NO_WRITE_SUPPORT
/*
* Write-support
*/
case MODE_SET_RESERVE1:
for (request = requests; request; request = request->next) {
if (request->processed)
continue;
tinfo = netsnmp_extract_table_info(request);
/*
* Since the mteEventNotificationTable only contains entries
* for rows where the mteEventActions 'notification(0)'
* bit is set, strictly speaking we should reject
* assignments where this isn't the case.
* But SET requests that include an assignment of the
* 'notification(0)' bit at the same time are valid,
* so would need to be accepted. Unfortunately, this
* assignment is only applied in the COMMIT pass, so
* it's difficult to detect whether this holds or not.
*
* Let's fudge things for now, by processing assignments
* even if the 'notification(0)' bit isn't set.
*/
switch (tinfo->colnum) {
case COLUMN_MTEEVENTNOTIFICATION:
ret = netsnmp_check_vb_oid( request->requestvb );
if (ret != SNMP_ERR_NOERROR) {
netsnmp_set_request_error(reqinfo, request, ret);
return SNMP_ERR_NOERROR;
}
break;
case COLUMN_MTEEVENTNOTIFICATIONOBJECTSOWNER:
case COLUMN_MTEEVENTNOTIFICATIONOBJECTS:
ret = netsnmp_check_vb_type_and_max_size(
request->requestvb, ASN_OCTET_STR, MTE_STR1_LEN);
if (ret != SNMP_ERR_NOERROR) {
netsnmp_set_request_error(reqinfo, request, ret);
return SNMP_ERR_NOERROR;
}
break;
default:
netsnmp_set_request_error(reqinfo, request,
SNMP_ERR_NOTWRITABLE);
return SNMP_ERR_NOERROR;
}
/*
* The Event MIB is somewhat ambiguous as to whether
* mteEventNotificationTable (and mteEventSetTable)
* entries can be modified once the main mteEventTable
* entry has been marked 'active'.
* But it's clear from discussion on the DisMan mailing
* list is that the intention is not.
*
* So check for whether this row is already active,
* and reject *all* SET requests if it is.
*/
entry = (struct mteEvent *) netsnmp_tdata_extract_entry(request);
if (entry &&
entry->flags & MTE_EVENT_FLAG_ACTIVE ) {
netsnmp_set_request_error(reqinfo, request,
SNMP_ERR_INCONSISTENTVALUE);
return SNMP_ERR_NOERROR;
}
}
break;
case MODE_SET_RESERVE2:
case MODE_SET_FREE:
case MODE_SET_UNDO:
break;
case MODE_SET_ACTION:
for (request = requests; request; request = request->next) {
if (request->processed)
continue;
entry = (struct mteEvent *) netsnmp_tdata_extract_entry(request);
if (!entry) {
/*
* New rows must be created via the RowStatus column
* (in the main mteEventTable)
*/
netsnmp_set_request_error(reqinfo, request,
SNMP_ERR_NOCREATION);
/* or inconsistentName? */
return SNMP_ERR_NOERROR;
}
}
break;
case MODE_SET_COMMIT:
/*
* All these assignments are "unfailable", so it's
* (reasonably) safe to apply them in the Commit phase
*/
for (request = requests; request; request = request->next) {
if (request->processed)
continue;
entry = (struct mteEvent *) netsnmp_tdata_extract_entry(request);
tinfo = netsnmp_extract_table_info(request);
switch (tinfo->colnum) {
case COLUMN_MTEEVENTNOTIFICATION:
memset(entry->mteNotification, 0, sizeof(entry->mteNotification));
memcpy(entry->mteNotification, request->requestvb->val.objid,
request->requestvb->val_len);
entry->mteNotification_len = request->requestvb->val_len/sizeof(oid);
break;
case COLUMN_MTEEVENTNOTIFICATIONOBJECTSOWNER:
memset(entry->mteNotifyOwner, 0, sizeof(entry->mteNotifyOwner));
memcpy(entry->mteNotifyOwner, request->requestvb->val.string,
request->requestvb->val_len);
break;
case COLUMN_MTEEVENTNOTIFICATIONOBJECTS:
memset(entry->mteNotifyObjects, 0, sizeof(entry->mteNotifyObjects));
memcpy(entry->mteNotifyObjects, request->requestvb->val.string,
request->requestvb->val_len);
break;
}
}
break;
#endif /* !NETSNMP_NO_WRITE_SUPPORT */
}
return SNMP_ERR_NOERROR;
}
|
